CN103665538B - A kind of extrusion grade sisal fibers reinforced polypropylene compound material and preparation technology thereof - Google Patents
A kind of extrusion grade sisal fibers reinforced polypropylene compound material and preparation technology thereof Download PDFInfo
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- CN103665538B CN103665538B CN201210357867.3A CN201210357867A CN103665538B CN 103665538 B CN103665538 B CN 103665538B CN 201210357867 A CN201210357867 A CN 201210357867A CN 103665538 B CN103665538 B CN 103665538B
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- sisal fibers
- coupling agent
- sisal
- reinforced polypropylene
- compound material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/045—Reinforcing macromolecular compounds with loose or coherent fibrous material with vegetable or animal fibrous material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/06—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
Abstract
The invention belongs to high-performance polymer field, specifically disclose a kind of extrusion grade sisal fibers reinforced polypropylene compound material and preparation technology thereof.Sisal fibers used by the present invention adopts novel process for treating surface, namely at supercritical CO
2under environment, coupling agent treatment is carried out to sisal fibers, the space of the sisal fibers after this method process and surface all with coupling agent generation coupled reaction, and in sisal fibers original moisture, pectin and hemicellulose again by CO
2dissolve and stripping thereupon, the sisal fibers after this method process and the consistency of resin matrix better, improve the mechanical property of matrix material.This matrix material has the feature such as light weight, energy-saving and environmental protection, can realize the light-weight design of product, and is widely used in the field such as automobile component, aerospace.In addition, the present invention twin-screw extrusion preparation technology used is simple, and production efficiency is high, constant product quality, is suitable for suitability for industrialized production.
Description
Technical field
The invention belongs to high-performance polymer field, be specifically related to a kind of extrusion grade sisal fibers reinforced polypropylene compound material and preparation technology thereof.
Background technology
In recent years, because global energy and environmental problem become increasingly conspicuous, the natural plant fibre adopting nature to enrich substitutes traditional fibre and strengthens the concern that polymer matrix composites are subject to people gradually, the concept of ecological composite material (eco-composites) is arisen at the historic moment, and natural fiber is hemp, flax, sisal hemp and ramie etc. mainly.Compared with conventional composite materials, the biodegradable and recycle of ecological composite material, environment compatibility and ecological in all there is comparative advantage.Wherein, sisal hemp has that density is little, specific tenacity and the advantage such as specific modulus is high, cheap, and price, less than the half of glass fibre, only has about 1/20 of carbon fiber, has great application prospect in preparation interior body trim matrix material.
About the research of sisal fibre-resin base composite material shows, at present, sisal fibers in use also comes with some shortcomings, such as, there is great amount of hydroxy group in sisal fibers, there is wetting ability, and most of polymkeric substance has hydrophobic nature, be unfavorable for the interfacial adhesion of fiber and resin matrix.Therefore, need when preparing matrix material first to carry out modification to fiber surface, to remove pectin, hemicellulose and some the low molecule impurity in fiber, thus the cohesiveness strengthened between itself and matrix and stability.
Summary of the invention
The present invention is strong in order to solve sisal fibers wetting ability, poor with the interface adhesion of the PP matrix of hydrophobic nature, thus causes the mechanical property of sisal fibers/polypropylene composite material lower, is unfavorable for the problems such as its application at auto industry field.Technical scheme of the present invention is the sisal fibers of the acrylic resin of 10 ~ 25g/10min, 10 ~ 30wt% containing the melting index of 60 ~ 90wt%, the coupling agent of 5 ~ 15wt%, the toughner of 5 ~ 15wt%, the oxidation inhibitor of 0 ~ 5wt%.
Coupling agent used in the present invention is γ-(2,3-glycidoxy) propyl group, the one in Trimethoxy silane and γ aminopropyltriethoxy silane.
Sisal fibers used in the present invention adopts supercritical CO
2method carries out the product after coupling agent treatment, and concrete implementation process is: poured in autoclave by a certain amount of coupling agent, more load weighted sisal fibers is put into the autoclave that coupling agent is housed, at supercritical CO
2under environment, coupling agent treatment is carried out to sisal fibers, then put into baking oven dry to constant weight namely obtain invent needed for sisal fibers.
The concrete steps preparing extrusion grade sisal fibers reinforced polypropylene compound material are as follows:
(1) according to formula, each component is weighed, the material except sisal fibers is put into high-speed mixer and mixes, and sisal fibers is adopted supercritical CO
2method is stand-by after carrying out coupling agent treatment;
(2) adopt twin screw extruder to prepare product of the present invention, each section of barrel temperature of twin screw extruder should control between 170 ~ 185 DEG C, screw slenderness ratio 24 ~ 36.
(3) mixed material is poured in the hopper of twin screw extruder, and the sisal fibers after process is joined in twin screw extruder by glass fiber opening, extrude through twin screw extruder, namely water-cooled, oven dry, the step such as pelletizing obtain granular extrusion grade sisal fibers reinforced polypropylene compound material.
Sisal fibers used by the present invention adopts novel process for treating surface, namely in the autoclave being full of coupling agent, adopts supercritical CO
2method carries out coupling agent treatment to sisal fibers.At supercritical CO
2under environment, coupling agent is by CO
2dissolve and absorb by the hole of sisal fibers, now, the hole of sisal fibers and surface all with coupling agent generation coupled reaction, meanwhile, in sisal fibers, original moisture, pectin and hemicellulose are again by the CO in system
2to dissolve and stripping thereupon, thus the water-absorbent of sisal fibers is reduced, improves the consistency of sisal fibers and resin.In addition, be present in coupling agent in sisal fibers and also can react formation cross-linked structure with matrix resin, make the consistency of the two better, improve the mechanical property of matrix material.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail, but the present invention is not limited to following examples.
Embodiment:
(1) load weighted coupling agent is poured in autoclave, then sisal fibers is put into the autoclave that coupling agent is housed, treat in supercritical CO
2under environment, coupling agent treatment is carried out to sisal fibers;
(2) temperature of autoclave is set to 40 DEG C, pressure is set to 7.5MPa, after temperature and pressure all reaches set(ting)value, start timing, after reaching 3 hours, is taken out by sisal fibers, puts into baking oven and dries to constant weight in 80 DEG C, obtain through supercritical CO
2method carries out the sisal fibers 1# of coupling agent treatment;
(3) temperature of autoclave is set to 80 DEG C, pressure is set to 9MPa, after temperature and pressure all reaches set(ting)value, start timing, after reaching 5 hours, is taken out by sisal fibers, puts into baking oven and dries to constant weight in 80 DEG C, obtain through supercritical CO
2method carries out the sisal fibers 2# of coupling agent treatment;
(4) according to two group of formula as shown in table 1, each component is weighed, and put into high-speed mixer and mix;
(5) adopt twin screw extruder to prepare product of the present invention, each process section temperature of twin screw extruder is 170 DEG C, 175 DEG C, 175 DEG C, 175 DEG C, 175 DEG C, 180 DEG C, 180 DEG C, 185 DEG C, screw slenderness ratio 36.
(6) mixed material is poured in the hopper of twin screw extruder, and the sisal fibers after process is joined in twin screw extruder by glass fiber opening, extrude through twin screw extruder, namely water-cooled, oven dry, the step such as pelletizing obtain granular extrusion grade sisal fibers reinforced polypropylene compound material, concrete detected result is as shown in table 2.
The formula of table 1 extrusion grade sisal fibers reinforced polypropylene compound material
| Material name | Polypropylene | Sisal fibers 1# | Sisal fibers 2# | Coupling agent | Toughner | Oxidation inhibitor |
| Formula 1(parts by weight) | 70 | 30 | 6 | 50 | 5 | |
| Formula 2(parts by weight) | 70 | 30 | 6 | 50 | 5 | |
| Formula 3(parts by weight) | 80 | 10 | 8 | 50 | 5 | |
| Formula 4(parts by weight) | 80 | 10 | 8 | 50 | 5 |
The detected result of table 2 extrusion grade sisal fibers reinforced polypropylene compound material
| Project | Testing method | Unit | Formula 1 | Formula 2 | Formula 3 | Formula 4 |
| Simply supported beam unnotched impact strength | ISO 179 | KJ/m 2 | 57.8 is continuous | 59.3 is continuous | 48.1 is continuous | 49.5 is continuous |
| Simply supported beam notched Izod impact strength | ISO 179 | KJ/m 2 | 18.5 is incomplete | 22.4 is incomplete | 20.9 is incomplete | 24.8 is incomplete |
| Tensile strength | ISO 527 | MPa | 20.8 | 21.4 | 19.7 | 20.3 |
| Flexural strength | ISO 178 | MPa | 30.1 | 34.5 | 31.7 | 32.9 |
| Modulus in flexure | ISO 178 | MPa | 1102 | 1176 | 1031 | 1058 |
| Density | ISO 1183 | g/cm 3 | 0.926 | 0.932 | 0.916 | 0.918 |
Claims (3)
1. an extrusion grade sisal fibers reinforced polypropylene compound material, it is characterized in that: the melting index containing 70 ~ 90wt% is the acrylic resin of 10 ~ 25g/10min, the pencil sisal fibers of 10 ~ 30wt%, the coupling agent of 5 ~ 15wt%, the toughner of 5 ~ 15wt%, the oxidation inhibitor of 0 ~ 5wt%;
Described sisal fibers is for adopting supercritical CO
2method carries out the product after coupling agent treatment.
2. according to the extrusion grade sisal fibers reinforced polypropylene compound material described in claim 1, it is characterized in that described coupling agent is γ-(2,3-glycidoxy) propyl group, the one in Trimethoxy silane and γ aminopropyltriethoxy silane.
3. according to the employing supercritical CO described in claim 1
2method carries out the sisal fibers of coupling agent treatment, it is characterized in that at supercritical CO
2under environment, coupling agent is by CO
2dissolve and absorb by the space of sisal fibers, and in sisal fibers original moisture, pectin and hemicellulose again by the CO in system
2to dissolve and stripping thereupon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210357867.3A CN103665538B (en) | 2012-09-25 | 2012-09-25 | A kind of extrusion grade sisal fibers reinforced polypropylene compound material and preparation technology thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210357867.3A CN103665538B (en) | 2012-09-25 | 2012-09-25 | A kind of extrusion grade sisal fibers reinforced polypropylene compound material and preparation technology thereof |
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| Publication Number | Publication Date |
|---|---|
| CN103665538A CN103665538A (en) | 2014-03-26 |
| CN103665538B true CN103665538B (en) | 2016-03-23 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270205A (en) * | 2008-04-24 | 2008-09-24 | 复旦大学 | Method for preparing organic or inorganic composite fiber material with supercritical carbonic anhydride |
| CN102574743A (en) * | 2009-09-18 | 2012-07-11 | Ccm研究有限公司 | Improved materials |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110206931A1 (en) * | 2010-02-24 | 2011-08-25 | E.I. Du Pont De Nemours And Company | Composite Material and Method for Making |
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2012
- 2012-09-25 CN CN201210357867.3A patent/CN103665538B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270205A (en) * | 2008-04-24 | 2008-09-24 | 复旦大学 | Method for preparing organic or inorganic composite fiber material with supercritical carbonic anhydride |
| CN102574743A (en) * | 2009-09-18 | 2012-07-11 | Ccm研究有限公司 | Improved materials |
Non-Patent Citations (1)
| Title |
|---|
| 《环保型剑麻纤维/聚丙烯木塑装饰材料板的制备与性能研究》;张波;《桂林理工大学硕士学位论文》;20091231;第2章，15-22页 * |
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Address after: Pingfang District Road 150060 Heilongjiang Hanan city of Harbin Province, No. 9 Applicant after: Heilongjiang Xinda Enterprise Group Co.,Ltd. Address before: Haping Road Development Zone in Harbin City, Heilongjiang province 150060 District Dalian Road No. 9 Applicant before: Heilongjiang Xinda Enterprise Group Co.,Ltd. |
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Effective date of registration: 20170531 Address after: China Industrial Park, 637000 Nanchong city of Sichuan province shunqingou Ying Patentee after: SICHUAN XINDA ENTERPRISE GROUP CO., LTD. Address before: Pingfang District Road 150060 Heilongjiang Hanan city of Harbin Province, No. 9 Patentee before: Heilongjiang Xinda Enterprise Group Co.,Ltd. |